/* FatturaPDF — design tokens
   ink     #16242E  petrol ink
   teal    #0E7C66  "marca da bollo" green
   paper   #EFF2F1  cool paper
   stamp   #C8472B  stamp red (errors only)
   gray    #5A6B72
*/
:root {
  --ink: #16242e;
  --teal: #0e7c66;
  --teal-dark: #0a5f4f;
  --teal-soft: #e3efeb;
  --paper: #eff2f1;
  --card: #ffffff;
  --stamp: #c8472b;
  --gray: #5a6b72;
  --hair: #d4dcda;
  --radius: 14px;
  --display: "Fraunces", Georgia, serif;
  --body: "Archivo", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--body);
  color: var(--ink);
  background:
    radial-gradient(1100px 500px at 80% -10%, #ffffff 0%, transparent 60%),
    var(--paper);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ---------- top bar ---------- */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px clamp(18px, 5vw, 48px);
}
.logo {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.logo span { color: var(--teal); }
.topnav { display: flex; align-items: center; gap: 16px; }
.gh-link { color: var(--ink); display: inline-flex; padding: 6px; border-radius: 8px; }
.gh-link:hover { color: var(--teal); }

/* ---------- language switches ---------- */
.lang-switch {
  display: inline-flex;
  background: var(--card);
  border: 1px solid var(--hair);
  border-radius: 999px;
  padding: 3px;
}
.lang-switch button {
  font-family: var(--body);
  font-size: 0.8rem;
  font-weight: 600;
  border: 0;
  background: transparent;
  color: var(--gray);
  padding: 5px 12px;
  border-radius: 999px;
  cursor: pointer;
}
.lang-switch button.active { background: var(--ink); color: #fff; }
.lang-switch.big button { font-size: 0.92rem; padding: 8px 18px; }
.lang-switch.big button.active { background: var(--teal); }

/* ---------- hero ---------- */
.container {
  width: min(720px, 100% - 36px);
  margin: 0 auto;
  flex: 1;
}
.hero { text-align: center; padding: clamp(20px, 5vh, 48px) 0 26px; }
.hero h1 {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(1.9rem, 5.5vw, 3.1rem);
  line-height: 1.08;
  letter-spacing: -0.015em;
  margin: 0 0 14px;
}
.tagline {
  color: var(--gray);
  font-size: clamp(0.95rem, 2.5vw, 1.05rem);
  line-height: 1.55;
  max-width: 54ch;
  margin: 0 auto 18px;
}
.privacy-badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--teal-dark);
  background: var(--teal-soft);
  border: 1px solid #bcd9d1;
  border-radius: 999px;
  padding: 6px 14px;
  margin: 0;
}

/* ---------- the receipt ---------- */
.receipt { margin: 8px 0 40px; filter: drop-shadow(0 18px 30px rgba(22, 36, 46, 0.10)); }
.receipt-body {
  background: var(--card);
  border-radius: var(--radius) var(--radius) 0 0;
  padding: clamp(18px, 4vw, 30px);
}
/* perforated bottom edge, like a torn receipt */
.receipt-edge {
  height: 14px;
  background: var(--card);
  -webkit-mask: radial-gradient(circle 8px at 8px 14px, transparent 97%, #000) -8px 0 / 16px 100%;
  mask: radial-gradient(circle 8px at 8px 14px, transparent 97%, #000) -8px 0 / 16px 100%;
}

.dropzone {
  border: 2px dashed var(--hair);
  border-radius: 10px;
  padding: clamp(26px, 6vw, 44px) 18px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background-color 0.15s, transform 0.15s;
}
.dropzone:hover, .dropzone:focus-visible { border-color: var(--teal); background: #fbfdfc; }
.dropzone:focus-visible { outline: 3px solid var(--teal-soft); outline-offset: 2px; }
.dropzone.dragover {
  border-color: var(--teal);
  background: var(--teal-soft);
  transform: scale(1.01);
}
.xml-tag {
  font-family: var(--mono);
  font-size: clamp(0.95rem, 3vw, 1.2rem);
  color: var(--teal);
  margin-bottom: 12px;
}
.drop-title { font-weight: 600; font-size: 1.06rem; margin: 0 0 6px; }
.drop-hint { color: var(--gray); font-size: 0.84rem; margin: 0; }

.controls { display: flex; justify-content: center; margin-top: 18px; }
.pdf-lang { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.pdf-lang-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray);
}

/* ---------- terminal output ---------- */
.terminal {
  margin-top: 20px;
  background: var(--ink);
  border-radius: 10px;
  overflow: hidden;
}
.terminal-head {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 9px 12px;
  background: #0e1820;
}
.terminal-head span {
  width: 10px; height: 10px; border-radius: 50%;
  background: #2c3e48;
}
.terminal-head span:first-child { background: var(--stamp); }
.terminal-head span:nth-child(2) { background: #c9a227; }
.terminal-head span:nth-child(3) { background: var(--teal); }
.terminal-head code { color: #5a6b72; font-family: var(--mono); font-size: 0.7rem; margin-left: 8px; }
.terminal pre {
  margin: 0;
  padding: 16px 16px 8px;
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 1.65;
  color: #d7e4e0;
  white-space: pre-wrap;
  word-break: break-word;
  min-height: 64px;
}
.terminal pre .ok { color: #4cc9a8; }
.terminal pre .err { color: #f08a6e; }
.terminal pre .dim { color: #6c8089; }

.result-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 16px 16px;
}
.donate-box { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.donate-hint { color: #93a8a3; font-size: 0.78rem; margin: 0; max-width: 24ch; }

.btn {
  font-family: var(--body);
  font-weight: 600;
  font-size: 0.88rem;
  border: 0;
  border-radius: 10px;
  padding: 10px 18px;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: transform 0.12s, box-shadow 0.12s;
}
.btn:hover { transform: translateY(-1px); }
.btn.ghost { background: transparent; color: #d7e4e0; border: 1px solid #2c3e48; }
.btn.ghost:hover { border-color: #4cc9a8; color: #4cc9a8; }
.btn.bmc { background: #ffdd00; color: #1a1a1a; box-shadow: 0 4px 14px rgba(255, 221, 0, 0.25); }

/* ---------- footer ---------- */
.footer {
  text-align: center;
  padding: 26px 18px 34px;
  color: var(--gray);
  font-size: 0.84rem;
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}
.footer a { color: var(--gray); }
.footer a:hover { color: var(--teal); }

@media (max-width: 560px) {
  .result-actions { flex-direction: column; align-items: stretch; text-align: center; }
  .donate-box { justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
  html { scroll-behavior: auto; }
}